Inventors:
Roger D. Beaulieu - Standish ME
William W. Alcorn - Cape Elizabeth ME
David S. Matychowiak - Saco ME
Assignee:
Super-Truss Building Systems, Inc. - Gorham ME
International Classification:
E04B 700
Abstract:
Prefabricated roof rafter truss structures are provided which function as deep webbing rafters for spanning and enclosing a living space and accommodating superinsulation. In each truss structure first and second outer rafter chords define a roof gable. At least one inner rafter chord is rigidly joined in parallel relationship to an outer rafter chord by deep webbing to define a rafter depth sufficient to accommodate insulation with an R factor of 60 or greater with ventilation space over the insulation. The truss structure also includes a horizontal ceiling joist chord positioned above and joined to the upper end of the inner rafter chord. Further deep webbing rigidly joins and spaces the horizontal ceiling joist chord with reference to the first and second outer rafter chords and generally ties the truss webs and chords into a rigid structure including the extending deep rafter portions. The attic space over the ceiling joist chord is also sufficient to accommodate superinsulation. The prefabricated truss structures are of flexible configuration and may be arranged for a variety of roof styles in which the rafter portions also function as the ceiling including, for example, capes, saltboxes, dormers, hips, gambrel roofs, and other high ceiling designs.